EP1033175A1 - Sekundärbehälter für eine handbetätigte Abgabepumpe - Google Patents

Sekundärbehälter für eine handbetätigte Abgabepumpe Download PDF

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Publication number
EP1033175A1
EP1033175A1 EP00113273A EP00113273A EP1033175A1 EP 1033175 A1 EP1033175 A1 EP 1033175A1 EP 00113273 A EP00113273 A EP 00113273A EP 00113273 A EP00113273 A EP 00113273A EP 1033175 A1 EP1033175 A1 EP 1033175A1
Authority
EP
European Patent Office
Prior art keywords
secondary container
contents
container
holding chamber
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00113273A
Other languages
English (en)
French (fr)
Other versions
EP1033175B1 (de
Inventor
Scott W. Demarest
James R. Crapser
Allen D. Miller
Robert E. Corba
Imre J. Dancs
David J. Houser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SC Johnson and Son Inc
Original Assignee
SC Johnson and Son Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SC Johnson and Son Inc filed Critical SC Johnson and Son Inc
Publication of EP1033175A1 publication Critical patent/EP1033175A1/de
Application granted granted Critical
Publication of EP1033175B1 publication Critical patent/EP1033175B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • B05B11/029—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container located on top of the remaining content
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1009—Piston pumps actuated by a lever
    • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1029—Pumps having a pumping chamber with a deformable wall actuated by a lever
    • B05B11/103—Pumps having a pumping chamber with a deformable wall actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1081—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1095—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle with movable suction side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0054—Cartridges, i.e. containers specially designed for easy attachment to or easy removal from the rest of the sprayer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/026—Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container

Definitions

  • This invention relates to a secondary container or "refill" for a manually operated dispensing pump for mixing and simultaneously delivering two separate materials, preferably two fluids.
  • the invention relates to such a dispensing pump in which the proportions of a first fluid to a second material to be dispensed are such that a relatively large amount of the first fluid is mixed with a relatively small amount of the second material.
  • the second material is a concentrate, active ingredient, or activating substance that is mixed in relatively small quantities with the first fluid, which may be a liquid diluant, carrier, or substance requiring activation just prior to use. This second material will be sold in a secondary container or "refill" for the pump in question.
  • Procter U.S. Pat. No. 5,332,157, shows a cylinder and piston device in which liquid is led via liquid transfer means to valved openings in the face of a piston.
  • the head room within the cylinder above the piston serves as a mixing chamber.
  • O'Neill U.S. Pat. No. 5,562,250, shows a single cylinder and piston arrangement, with the space in the cylinder above the piston serving as a mixing chamber.
  • dip tubes descending to the compartments of a multiple-compartment container communicate directly with openings in the cylinder.
  • the relative amounts of liquid pumped from different compartments is controlled most commonly by constricting or selecting the relative sizes of the liquid flow paths at some point between the containers and the place where they are mixed before being dispensed. See O'Neill, U.S. Pat. No. 5,562,250, Vierkötter, U.S. Pat. No. 4,355,739, Metzler, III, U.S. Pat. No. 3,786,963, among others.
  • the smaller piston is directly mounted as an axial extension of the larger piston, with valving such that the small piston always draws liquid from the container attached to it in an amount that is in a fixed relation to that drawn by the larger piston from the container attached to the larger piston.
  • the liquid drawn into the smaller piston via a dip tube communicating with a secondary container is discharged directly into the head space above the larger piston, which serves as a mixing chamber.
  • the second reservoir must be made of a material that can successfully contain one of the two materials to be co-dispensed while it can also resist infiltration by the other material.
  • one of the advantages of dual dispensing is the opportunity to dispense essentially incompatible materials that are mixed in the dispensing pump and immediately applied. Such incompatible materials may well have different containment requirements, making it desirable that the two reservoirs be held physically separate from each other.
  • the art provides no convenient means for providing for such separation without the need for dip tubes or other extensive fluid transfer means for each reservoir.
  • the invention provides a manually operable dispensing pump for use with a primary container containing a primary fluid and a secondary container having contents to be co-dispensed with the primary fluid.
  • the dispensing pump has a body that has primary attachment means to attach the body to the primary container and secondary attachment means to which the secondary container can be attached.
  • the dispensing pump includes a sprayer mechanism held by or formed within the body.
  • the sprayer mechanism includes a piston and cylinder having cylinder head space above the piston.
  • a mixing chamber is provided that is in fluid communication with the cylinder head space.
  • the sprayer mechanism also includes a dip tube or other primary fluid transfer means for transferring fluid to the mixing chamber from the primary container.
  • the primary fluid transfer means includes a primary check valve that allows fluid being transferred therein to flow only toward and not away from the mixing chamber.
  • the sprayer mechanism also includes a finger operated trigger or other manual operating means for reciprocatingly moving the piston within the cylinder, alternatingly increasing and decreasing the cylinder head space to draw contents into and then expel the contents from the mixing chamber.
  • the cylinder head space can itself serve as the mixing chamber, although a separate chamber simply in fluid communication with the cylinder head space can also serve as the mixing chamber, either by itself or in combination with the cylinder head space.
  • the sprayer mechanism also includes a discharge orifice and a discharge conduit that provides fluid communication between the mixing chamber and the discharge orifice.
  • the discharge conduit has a discharge check valve that permits fluid to move in the discharge conduit only toward the discharge orifice and not back toward the mixing chamber.
  • the dispensing pump of the invention further includes a secondary container that is attachable directly to the body by the secondary attachment means at a location remote from the primary attachment means.
  • the secondary container includes a holding chamber holding selected contents and an outlet that provides immediate communication between the holding chamber and the sprayer mechanism when the secondary container is attached to the body.
  • the attachment of the secondary container to the body is achieved in such a manner that contents of the secondary container can pass immediately into the mixing chamber. Contents will be understood to be able to pass immediately from the secondary container into the mixing chamber if the contents are not required to pass through a dip tube or other structure not forming a part of or contained within the body of the dispensing pump.
  • a secondary check valve permits contents of the secondary holding chamber to move only toward and not away from the mixing chamber.
  • the secondary check valve may be either part of the sprayer mechanism or part of the secondary container.
  • the secondary check valve may be a ball valve, umbrella valve, flapper valve, duck-bill valve, or any other one-way valve of the many kinds well known to those skilled in the art.
  • this mixed discharge is achieved by a dispensing pump that holds the secondary container separate from the primary container, with no part of the device being required to contain or otherwise interact with both of the materials to be dispensed until they reach the mixing chamber. Furthermore, the fact that contents of the secondary container can pass immediately into the mixing chamber avoids the use of dip tubes or other extensive fluid communication arrangements for the secondary container, reducing the amount of secondary container contents that must be available simply to prime the pump or otherwise to charge the system.
  • the secondary container may be permanently attached to the body and even can be unitarily formed therewith.
  • the secondary container is replaceably detachable from the secondary attachment means. This provides for convenient refilling after the contents of an initial secondary container have been exhausted.
  • each secondary container can be made of materials selected to be specifically appropriate for the long-term containment of its contents. Furthermore, because a minimal amount of secondary container contents is required to prime the system and reach the mixing chamber, only a minimal amount of waste spray must be disposed of before the new contents have charged the system.
  • the secondary check valve be a part of the secondary container.
  • the dispensing pump includes metering means for metering fluid from the primary container and material contained in the secondary container into the mixing chamber in a selected ratio.
  • metering means for metering fluid from the primary container and material contained in the secondary container into the mixing chamber in a selected ratio.
  • the primary fluid and the contents of the secondary container may be mutually incompatible.
  • Materials shall be understood to be “incompatible” if they are either destroyed, modified, reduced in activity, made less stable, or otherwise altered by extended exposure to the other materials to be co-delivered by the pump or would have such an effect on those other materials. "Extended” exposure shall mean exposure for at least the minimal time the materials are expected to be stored in the pump and the primary and secondary containers prior to use.
  • the contents of the secondary container preferably include an active ingredient selected from the group consisting of scents, cleaning active ingredients, biocides, and pest control active ingredients.
  • “Cleaning active ingredients” includes but is not limited to bleaches, surfactants, acids, enzymes, and the like.
  • Biocides includes but is not limited to anti-bacterials, anti-molds, herbicides, and the like.
  • Pest control active ingredients includes ingredients to kill or alter the behavior or development of pests such as insects, arachnids, chilopods. diplopods, and the like.
  • the invention includes a secondary container for containing selected contents for use with the dispensing pump disclosed above.
  • the secondary container includes a contents-tight holding chamber having an outlet and mating means by which the secondary container may be attached to the secondary attachment means of the dispensing pump, with the outlet in immediate communication with the sprayer mechanism of the pump.
  • the secondary container so described is intended for use as a refill for the dispensing pump to renew the supply of the secondary container's contents.
  • different contents or different content delivery rates could be provided in different secondary containers. By this means, it is possible to select between alternative secondary container contents or to select among differing ratios of secondary container contents to the primary fluid in the spray delivered by the pump.
  • a preferred embodiment of the manually operable dispensing pump of the invention is shown generally in Fig. 1 and, in cross section, in Fig. 2 at 10, the pump 10 being shown in Fig. 1 mounted on a primary container 12.
  • the primary container 12 shown in Fig. 1 is a conventional bottle of a general sort common in the art of trigger spray products.
  • the primary container 12 is intended to contain a primary fluid (not shown).
  • the dispensing pump 10 is used with and may include a secondary container 14 having contents (not shown) to be co-dispensed with the primary fluid.
  • the dispensing pump 10 has a body 16 that has primary attachment means to attach the body 16 to the primary container 12, such as the threads 20 shown in Fig. 2.
  • the pump 10 also has secondary attachment means to which the secondary container 14 can be attached, such as the secondary threads 22 shown in Fig. 2.
  • Alternative embodiments of the primary and secondary attachment means such as but not limited to bayonet, snapped, and press fit attachments, will be apparent to one skilled in the art and are included within the breadth and scope of the invention.
  • the dispensing pump 10 includes a sprayer mechanism held by or formed within the body 16.
  • the sprayer mechanism includes a piston 24 and cylinder 26 having cylinder head space 28 above the face of the piston.
  • a mixing chamber 30 is provided that is in fluid communication with the cylinder head space 28.
  • the sprayer mechanism also includes a dip tube 32, a collapsible or non-vented bottle, or other primary fluid transfer means for transferring fluid to the mixing chamber 30 from the primary container 12.
  • the primary fluid transfer means includes a primary check valve 34, such as the conventional ball valve shown schematically in Figs. 2, 5-7.
  • the primary check valve 34 allows fluid being transferred via the primary fluid transfer means to flow only toward and not away from the mixing chamber 30.
  • the sprayer mechanism also includes a finger operated trigger 36 or other manual operating means for reciprocatingly moving the piston 24 within the cylinder 26, alternatingly increasing and decreasing the cylinder head space 28 to draw primary liquid and contents of the secondary container into and then expel them from the mixing chamber 30.
  • the cylinder head space 28 can itself serve as the mixing chamber 30, as is illustrated in the embodiment of Figs. 2, 4-7.
  • a separate chamber simply in fluid communication with the cylinder head space 28 can also serve as the mixing chamber 30, either by itself or in combination with the cylinder head space. Such an arrangement is shown in the embodiment of the pump 10 shown in Fig. 3.
  • the sprayer mechanism also includes a discharge orifice 38, together with a discharge conduit 40 that provides fluid communication between the mixing chamber 30 and the discharge orifice.
  • the discharge conduit 40 has a discharge check valve 42 that permits fluid to move in the discharge conduit only toward the discharge orifice 38 and not back toward the mixing chamber 30.
  • the secondary container 14 is attachable directly to the body 16 of the pump 10 by the secondary attachment means at a location remote from the primary attachment means.
  • the secondary container 14 includes a holding chamber 44 for holding selected contents and an outlet 46 that provides immediate communication between the holding chamber and the sprayer mechanism when the secondary container is attached to the body 16.
  • a secondary check valve 48 permits contents of the holding chamber 44 to move only toward and not away from the mixing chamber 30.
  • the secondary check valve 48 may be either part of the sprayer mechanism (as in the embodiment of the pump 10 shown in Fig. 7) or part of the secondary container 14 (as in the embodiments shown in Figs. 2-6).
  • the secondary container 14 may be permanently attached to the body 16, as in the embodiments shown in Figs. 3 and 4, and even can be unitarily formed therewith. However, in a preferred embodiment of the dispensing pump 10, the secondary container 14 is replaceably detachable from the secondary attachment means, as in the embodiments shown in Figs. 2, 5, 6, and 7. Such replaceable attachment allows convenient substitution of a full secondary container 14 after the contents of an initial secondary container have been exhausted. Other advantages of replaceable attachment have been discussed, above. When the secondary container 14 is replaceably detachable, it is preferred that the secondary check valve 48 be a part of the secondary container.
  • the dispensing pump 10 include metering means for metering fluid from the primary container 12 and material contained in the secondary container 14 into the mixing chamber 30 in a selected ratio.
  • Alternative embodiments of the metering means are shown in Figs. 2-7 and are discussed, below. The advantages of the metering means are discussed, above.
  • the metering means includes a primary orifice 50 of a selected size through which fluid from the primary container 12 must flow as it moves toward the mixing chamber 30.
  • a secondary orifice 52 of a selected size is also provided through which material contained in the secondary container 14 must pass as it moves toward the mixing chamber 30.
  • the ratio of the primary container fluid to the secondary container material entering the mixing chamber 30 is determined by the relative sizes of the primary and secondary orifices 50,52.
  • the secondary orifice 52 is a part of the secondary container.
  • the piston 24 of the dispensing pump 10 described above may be designated to be the "primary piston 54," having a selected primary piston displacement.
  • the metering means may then include secondary pumping means for moving contents from the holding chamber 44 toward the mixing chamber 30.
  • the secondary pumping means may be located either in the body 16 (as shown in the embodiment of Fig. 6) or in the secondary container 14 (as shown in the embodiments of Figs. 2, 4-5).
  • the secondary pumping means operates in physical coordination with the primary piston 54, being driven mechanically, hydraulically, or by other means, the secondary pumping means having a selected secondary displacement.
  • the primary piston 54 pumps fluid from the primary container 12 and the secondary pumping means pumps contents from the secondary container 14, with the relative amounts of the primary container fluid and secondary container contents delivered to the mixing chamber 30 being determined respectively by the displacements of the primary piston 54 and secondary pumping means.
  • the secondary container 14 is replaceably detachable from the secondary attachment means, it is preferred but not required that the secondary pumping means form a part of the secondary container.
  • the secondary container's holding chamber 44 has a wall 56
  • the secondary pumping means includes a flexible membrane 58 located in the holding chamber wall.
  • Means are provided for flexing the membrane 58 into and out of the holding chamber 44 in physical coordination with the movement of the primary piston 54.
  • a one-way valve 60 allows holding chamber contents to be pumped out through the holding chamber outlet 46 toward the mixing chamber 30 when the membrane 58 is flexed inwardly with respect to the holding chamber 44, increasing the internal pressure of the contents of the holding chamber, the holding chamber being such that flow outwardly through the valve 60 is the means of least resistance to relieve pressure within the holding chamber.
  • the one-way valve 60 prevents the contents from returning therethrough when the membrane 58 is flexed outwardly.
  • the one-way valve 60 is mounted directly in the holding chamber wall 56, as is shown in Fig. 2, and either constitutes or is in direct fluid communication with the holding chamber outlet 46.
  • the means for flexing the membrane 58 includes a piston extension rod 62 driven by the primary piston 54.
  • the piston extension rod 62 pushes against the membrane 58 when the primary piston 54 is moved, flexing the membrane.
  • the piston extension rod 62 be co-axial with the primary piston 54, extending from the face of the primary piston out through the end of its cylinder.
  • the piston extension rod 62 may only contact and not be attached to the primary piston 54.
  • the piston extension rod 62 may even form a part of the secondary pumping means.
  • the piston extension rod 62 is slideably embraced by a seal, such as that shown at 64 in Fig. 2, that prevents the free intermixing of the contents of the head space above the face of the primary piston 54 and any material in contact with the surface of the seal distal to the primary piston.
  • the slidable seal 64 also prevents the leaking of primary fluid when the secondary container 14 is removed for replacement.
  • piston extension rod is attached directly or indirectly to the primary piston at a point remote from its face but nevertheless moving with and being driven by the primary piston.
  • the flexible membrane 58 form a part of the secondary container and that the means for flexing the membrane remain a part of the sprayer mechanism of the body 16 when the secondary container is removed, whether a piston extension rod or other flexing means is employed.
  • the flexible membrane 58 preferably is made of a resilient material that springs back to its original shape after it has been flexed, thus being prepared for a second pumping stroke.
  • a spring (not shown) or other affirmative mechanical means of restoring the flexing membrane to its original position may be provided.
  • the flexible membrane 58 will be urged toward its original position simply by the pressure differential.
  • the holding chamber 44 includes a compression chamber 68 and a reservoir 70, the two being in communication via a one-way compression chamber valve 72 that permits flow of reservoir contents only into and not out of the compression chamber.
  • the secondary check valve 48 preferably is located in the wall of the compression chamber 68.
  • a flexible membrane shown at 66 generally similar in physical characteristics and pumping function to the membrane 58 of the embodiment of Fig. 2, may be flexed inwardly into the compression chamber 68, forcing contents of the compression chamber out through the secondary check valve 48.
  • the flexible membrane 66 returns to its original position, reservoir contents are drawn into the compression chamber 68 via the one-way compression chamber valve 72.
  • This arrangement permits the reservoir 70 to be a limp bag or other collapsible structure, the advantages of such reservoirs being discussed below.
  • the secondary pumping means includes a secondary piston with a secondary cylinder such as those shown respectively at 74 and 76 in the embodiments of Figs. 5 and 6.
  • the secondary cylinder 76 is in communication with both the holding chamber 44 of the secondary container 14 and the mixing chamber 30.
  • At least one one-way valve 78 permits flow of holding chamber contents only toward the mixing chamber 30.
  • Means are provided to drive the secondary piston 74 in physical coordination with the primary piston 54 to pump contents from the holding chamber 44 and then pump the contents toward the mixing chamber 30.
  • the secondary piston 74 may have a peripheral seal 80 that is biased against the sides of its cylinder 76 and is so made that, if there is no alternative flow path of less resistance, material contained in the head space above the secondary piston will blow by the peripheral seal as the head space is compressed when the secondary piston is moved toward the end of the secondary cylinder 76. If the space behind the secondary piston 74 is in communication with the mixing chamber 30, the peripheral seal 80 can itself function as a one-way valve permitting flow of holding chamber contents only toward the mixing chamber.
  • peripheral seal 80 is a resilient and flexible skirt-like flange extending rearwardly from the head of the secondary piston 74 to contact the walls of the secondary cylinder 76 (as is the peripheral seal shown in the Figures), the flange will distort readily to allow material under pressure to pass by it from the face of the secondary piston toward its rear. However, the flange's own resiliency and/or fluid pressure from the opposite direction will cause the flange to press more tightly against the walls of the secondary cylinder 76, resulting in increased resistance to back flow.
  • the primary and secondary pistons 54,74 may be located side by side with their physically coordinated movement being achieved by their being actuated by a single trigger with appropriate linkage well known in the art, and other arrangements of the pistons and other means to physically coordinate their movement will be apparent to one skilled in the art.
  • the means to drive the secondary piston 74 include a piston extension rod 84 comparable to the piston extension rod 62, driven by the primary piston 54 and adapted to move the secondary piston within the secondary cylinder 76.
  • the piston extension rod 84 may either be fastened to the secondary piston 74 (by unitary construction, a ball and socket arrangement, or other means) or may simply contact it.
  • the means to drive the secondary piston include a secondary spring 86 that biases the secondary piston backwardly, the piston extension rod and the secondary spring cooperatively moving the secondary piston in physical coordination with the primary piston 54.
  • the presence of the secondary spring 86 is preferred to help move the secondary piston 74 backwardly after it has been thrust toward the end of the secondary cylinder 76, other arrangements are possible. For example, if the space behind the head of the secondary piston 74 is in communication with the mixing chamber 30, when the mixing chamber is under reduced pressure as the primary piston 54 withdraws, the space behind the head of the secondary piston will similarly be under reduced pressure. If that pressure is less than the pressure of the contents in the secondary container holding chamber 44, the pressure differential can be sufficient to move the secondary piston backwardly, without need for a biasing spring.
  • the secondary piston 74 and its cylinder 76 form a part of the secondary container, together with the secondary spring 86, if such a spring is used, while the means to drive the secondary piston remains a part of the sprayer mechanism of the body 16 when the secondary container is removed.
  • Such an arrangement is shown in the embodiment of Fig. 5.
  • the contents of the secondary container 14 may be a fluid, including either liquids or gasses, and may also include pumpable solid particles.
  • Solid in this context shall be deemed to refer to any material capable of existing as a discreet particle of non-flowable material, including traditional solids, gel particles, and the like.
  • a solid particle shall be deemed “pumpable” if it has characteristics such that it can be drawn through the valves and other routes within the dispensing pump 10 through which fluid is forced by action of the pump to be discharged therefrom. A stable suspensions of such particles within liquids are preferred.
  • the primary fluid and the contents of the secondary container 14 may be mutually incompatible.
  • Materials shall be understood to be “incompatible” if they are either destroyed, modified, reduced in activity, made less stable, or otherwise altered by extended exposure to the other materials to be co-delivered by the pump or would have such an effect on those other materials. "Extended” exposure shall mean exposure for at least the minimal time the materials are to be stored in the pump 10 and the primary and secondary containers 12,14 prior to use.
  • the invention may also be understood as an independently existing, separable secondary container 14 for containing selected contents for use with the dispensing pump disclosed above and having the features described above for the secondary container when it has been disclosed in embodiments that may be removed from the secondary attachment means.
  • Fig. 8 shows a preferred embodiment of such an independently existing secondary container 14.
  • the secondary container 14 includes a contents-tight holding chamber 44 having an outlet 46 and mating means by which the secondary container may be attached to the secondary attachment means of the dispensing pump, with the outlet in immediate communication with the sprayer mechanism of the pump 10.
  • the secondary container 14 so described is intended for use as a refill for the dispensing pump 10 to renew the supply of the secondary container's contents or to allow for selectable, different contents or different contents delivery rates provided in different secondary containers.
  • a removable closure means be provided to prevent loss of the contents of the secondary container prior to its installation on the pump 10.
  • Such closure means may be a cap (not shown) that removably attaches to the mating means.
  • a pierceable seal be provided to close the outlet 46 in contents-tight relation to avoid leakage and preserve the contents from contact with the surrounding environment.
  • the secondary attachment means of the dispensing pump include seal-piercing means to pierce the seal and provide immediate communication between the outlet of the secondary container and the sprayer mechanism of the dispensing pump.
  • the holding chamber 44 includes a collapsible pouch 87 contained within a rigid shell 89.
  • the collapsible pouch 87 has a pierceable wall 88 that faces toward the pump when the secondary container 14 is installed on the pump 10, the pierceable wall itself functioning as the seal.
  • the embodiment of the pump 10 shown in Fig. 7 includes a sharp prong 90 adapted to pierce the wall 88 as the secondary container is moved into position on the pump.
  • the wall 88 preferably is made of materials known to the art that tend to surround and seal to a piercing object, such as the prong 90, to adhere to the prong in contents-tight relation.
  • the holding chamber 44 of the embodiment of the secondary container 14 shown in Fig. 3 is a collapsible bag that can simply decrease in volume to relieve that pressure.
  • the holding chamber has rigid side walls 92 and an end wall 94 spaced from the outlet 46.
  • the margin of the end wall 94 has a slideable seal adapted to slide within the side walls in contents-tight relation.
  • holding chamber 44 can be vented by any of the various means well known to the art.
  • the secondary container 14 include a secondary pumping means for pumping contents from the secondary container through the outlet 46.
  • the secondary pumping means is adapted to operate in physical coordination with the primary piston 54 when the secondary container is attached to the body 16 of the dispensing pump 10.
  • Alternative embodiments and the function of the secondary pumping means with respect to metering relative quantities of the contents of the secondary holding chamber 14 and fluid contained within the primary holding chamber 12 are set forth in detail above.
  • All parts of the pump 10 may be manufactured from suitable plastics and elastomerics well known to those skilled in the art by standard molding techniques. Springs may be made conventionally of suitable metals or plastics.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)
  • Closures For Containers (AREA)
EP00113273A 1997-10-14 1998-10-13 Sekundärbehälter für eine handbetätigte Abgabepumpe Expired - Lifetime EP1033175B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/950,342 US5964377A (en) 1997-10-14 1997-10-14 Manually operable pump for mixing and dispensing primary and secondary fluids
US950342 1997-10-14
EP98953401A EP1023125B1 (de) 1997-10-14 1998-10-13 Handbetätigte abgabepumpe

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP98953401.1 Division 1998-10-13
EP98953401A Division EP1023125B1 (de) 1997-10-14 1998-10-13 Handbetätigte abgabepumpe

Publications (2)

Publication Number Publication Date
EP1033175A1 true EP1033175A1 (de) 2000-09-06
EP1033175B1 EP1033175B1 (de) 2008-05-14

Family

ID=25490306

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00113273A Expired - Lifetime EP1033175B1 (de) 1997-10-14 1998-10-13 Sekundärbehälter für eine handbetätigte Abgabepumpe
EP98953401A Expired - Lifetime EP1023125B1 (de) 1997-10-14 1998-10-13 Handbetätigte abgabepumpe

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP98953401A Expired - Lifetime EP1023125B1 (de) 1997-10-14 1998-10-13 Handbetätigte abgabepumpe

Country Status (17)

Country Link
US (1) US5964377A (de)
EP (2) EP1033175B1 (de)
JP (1) JP2001519235A (de)
KR (1) KR20010031100A (de)
CN (1) CN1105604C (de)
AR (1) AR016960A1 (de)
AT (2) ATE240160T1 (de)
AU (1) AU735947B2 (de)
BR (1) BR9814078A (de)
CA (1) CA2305281C (de)
DE (2) DE69839491D1 (de)
ES (2) ES2304925T3 (de)
NZ (1) NZ503989A (de)
PL (1) PL339913A1 (de)
RU (1) RU2185893C2 (de)
WO (1) WO1999019075A1 (de)
ZA (1) ZA989382B (de)

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Also Published As

Publication number Publication date
DE69839491D1 (de) 2008-06-26
AR016960A1 (es) 2001-08-01
ES2304925T3 (es) 2008-11-01
CN1275931A (zh) 2000-12-06
ZA989382B (en) 1999-04-20
KR20010031100A (ko) 2001-04-16
CA2305281A1 (en) 1999-04-22
ATE240160T1 (de) 2003-05-15
WO1999019075A1 (en) 1999-04-22
DE69814661D1 (de) 2003-06-18
JP2001519235A (ja) 2001-10-23
DE69814661T2 (de) 2004-03-25
US5964377A (en) 1999-10-12
NZ503989A (en) 2002-04-26
EP1033175B1 (de) 2008-05-14
AU1079099A (en) 1999-05-03
CA2305281C (en) 2003-05-20
BR9814078A (pt) 2000-09-26
ATE395143T1 (de) 2008-05-15
PL339913A1 (en) 2001-01-15
ES2193576T3 (es) 2003-11-01
RU2185893C2 (ru) 2002-07-27
EP1023125B1 (de) 2003-05-14
CN1105604C (zh) 2003-04-16
AU735947B2 (en) 2001-07-19
EP1023125A1 (de) 2000-08-02

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